dace
Design and Analysis of Computer Experiments
Topics
package_ddace, design_and_analysis_of_computer_experiments
Specification
Alias: None
Arguments: None
Child Keywords:
Required/Optional |
Description of Group |
Dakota Keyword |
Dakota Keyword Description |
---|---|---|---|
Required (Choose One) |
DACE type |
Grid Sampling |
|
Uses purely random Monte Carlo sampling to sample variables |
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Orthogonal Array Sampling |
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Uses Latin Hypercube Sampling (LHS) to sample variables |
|||
Orthogonal Array Latin Hypercube Sampling |
|||
Box-Behnken Design |
|||
Central Composite Design |
|||
Optional |
Number of samples for sampling-based methods |
||
Optional |
Seed of the random number generator |
||
Optional |
Reuses the same seed value for multiple random sampling sets |
||
Optional |
ANOVA |
||
Optional |
Calculate metrics to assess the quality of quasi-Monte Carlo samples |
||
Optional |
Activates global sensitivity analysis based on decomposition of response variance into contributions from variables |
||
Optional |
Number of replications in the sample set |
||
Optional |
Identifier for model block to be used by a method |
Description
The Distributed Design and Analysis of Computer Experiments (DDACE) library provides the following DACE techniques:
grid sampling (
grid
)pure random sampling (
random
)orthogonal array sampling (
oas
)latin hypercube sampling (
lhs
)orthogonal array latin hypercube sampling (
oa_lhs
)Box-Behnken (
box_behnken
)central composite design (
central_composite
)
These methods all generate point sets that may be used to drive a set of computer experiments. Note that all of the DACE methods generated randomized designs, except for Box-Behnken and Central composite which are classical designs. That is, the grid sampling will generate a randomized grid, not what one typically thinks of as a grid of uniformly spaced points over a rectangular grid. Similar, the orthogonal array is a randomized version of an orthogonal array: it does not generate discrete, fixed levels.
In addition to the selection of the method, there are keywords that affect the method outputs:
And keywords that affect the sampling: